List of Articles modeling and simulation Open Access Article Abstract Page Full-Text 1 - Presenting a New Approach in Simulation and Analysis of Shoulder Error on Radar Antenna Beam of Space-Based Artificial Aperture Mehdi Shamekh Roozbeh Hamzehyan Najmeh Cheraghi Shirazi Abdolrasul Ghasemi Open Access Article Abstract Page Full-Text 2 - COUPLING MODEL FOR MULTI-COMPONENT GAS PERMEATION PROCESS A. Hussain A. Qayyum